I have the exact same controller but on a different case (Commander C31) and I also have the exact same problem: all fan light up when using controller but when I switch to motherboard sync, only a 1 led of top fan work. My motherboard is Asus Prime x570-P model.
In Asus Aura, it show that there is only 1 addressable light on the strip.
Interesting detail: If I unplug SATA power for the controller, fan obviously dont spin, and they don't light up either, but Aura says there is 120 led now on the strip.
